Profit Continues to Benefit From Acquisition of Coventry Health Care

Aetna Inc. said it expects to lose money on its business in the health-law marketplaces this year, with the demographics of enrollees skewing slightly more than expected toward people likely to rack up higher costs.

The insurer, which is participating in public consumer exchanges in 16 states and the District of Columbia, the most of any carrier, said it has signed up about 135,000 paid members through the end of January.